"You guys need not feel bad about losing your tenor, because," he says, "I will be glad to fill in for him at all times."
Personally I do not think Jack's tenor is as good as Louie the Lug's especially when it comes to hitting the very high notes in such songs as Sweet Adeline, because he does not hold them long enough to let Good Time Charley in with his bum-bum.
But of course this does not go if Jack O'Hearts hears it, as I am never sure he does not clip Louie the Lug just to get a place in our quartet, at that.